Wrist-pin fastening.



M. D. FRANEY.

WRIST PIN FASTENING.

APPLlQATION FILED OCT. 21. 1912.

Patented May 18, 1915.

"WEN-ran re snares harass or MICHAEL njrnamir, or straw-insure, euro,

"WRIST-PIN FASTENIE Specification of Letters ?atent.

Application filed October 21, 1912. Serial No, 726,915.

To c116 whom it may concern:

Be it known that 1, MICHAEL D. FRANEY, a citizen of the United States, residing at Cleveland, in the county of Guyahoga and State of Ohio, have. invented a certain new and useful Improvement in Wrist-PinrFastenings, of which improvement thefollowing is a specification.

,This invention relates ti) means for fastening wrist pins in cross heads, coupling rods, or other members, and is more particularly designed for use upon locomotives.

The principal object of my invention, is to provide an improved wrist pin connection in which the pin may be applied by in se rting the same into an opening taper ng.

toward the back or inside of the head, and forcing the pin into said opening by a screw clamping device mounted on the outer side of the head.

In the accompanying drawings: Figure 1 is a side elevation of-alocomotive cross head embodying one form of my improvement;

, and Fig. 2, transverse section taken on the portions, and forminga line 2'-2 of Fig. 1.

As shown in the, drawing, the'cross head is constructed with the usual piston rod ing a threaded opening for receiving the clamp screw or nut, 14, which bears against the outer end of the wrist pin. and forces the same into the tapered sockets. The nut may be designed to be engaged by any suitable tool or wrench for turning the same,

. but it is preferably made hollow, as shown,

socket portion, 12, outer wall, 7, and inner main connecting rod.

tapered portions, 8

bearing for the- .The tapered opening in the outer wall is larger than that of the inner wall and the cylindrical bearing portion of the pin, so

' that the pin may be'inserted; from the outer side into said openings and then be forced into the same by means of the screw clampmg wall. This screw clamp may be formed in various ways, but as shown in the drawing, it comprises a cylindrical boss or flange, 13,

device mounted on the outer side of the.

projecting from the outer face of the wall,

, around the tapered pin opening and havpered socket opening,-

having a hexagonal'or other suitably shaped recess for receiving the wrench. Cotter pins, 1?, may he provided forlocking the nut, 14, in any given position and prevents ing the same from working loose;

,For the purpose of lubricating, the rod hearing the'pin may have the usual drilled resented May is, 1915. J

holes and grease plug, 20, screwed'into the end of the wrist pin,- and the threaded connection for this grease plug may also serve as a screw holt connection for drawing out the wrist pin when it'is desired to remove.

the same from the head.

While I have shown but one form of my improvement'as applied to a cross head, it will be evident that various forms of screw clamping devices may be employed for forcingthe wrist pin into its sockets from the outer side of the head, and that the same may also he "applied to side rods, plates, or other supporting walls where it is desired to mount a wrist-pin.

It will now be seen that I have provideda simple, compact, and durable connection for securely fastening the Wrist pin in position, also one which is readily accessible at all times for adjusting or removing the pin I by simply unscrewing the clamping nut whenever it is desired .to take down the rod connection.

Having now described my invention, what I claim'as new. and desire to secure by Letters Patent is 1. In a wrist pin connection, the combi-,

nation with a supporting wall having a taand a hollow internally threaded boss around said opening and projecting outward from the face of said wall, of a wrist pin having a tapered portion, fitting said socket, and a threaded nut mounted in said boss and bearing.

against the fare of'said pin for forcing the same into said socket.

'2. in a. wrist pin connection, the, combination with a supporting wall having to,-

pered socket opening, and a hollow intercotter pins extending through said nut anci nally threaded boss around said opening boss. I e and projecting outward from the face of MICHAEL D. FRANEY.

. said Wall, of a wrist pin having a, tapered portion fitting said socket, a hollow thread- Witnesses: ed nut mounted within said boss and bear- JOSEPH CHIDLEY, mg against the face of said pin, and radial J. F. DEEMS. 

